1 /*- 2 * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * Driver for extra ACPI-controlled features found on HP laptops 32 * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p). 33 * Allows to control and read status of integrated hardware and read 34 * BIOS settings through CMI. 35 * Inspired by the hp-wmi driver, which implements a subset of these 36 * features (hotkeys) on Linux. 37 * 38 * HP CMI whitepaper: 39 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf 40 * wmi-hp for Linux: 41 * http://www.kernel.org 42 * WMI and ACPI: 43 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx 44 */ 45 46 #include "opt_acpi.h" 47 #include <sys/param.h> 48 #include <sys/conf.h> 49 #include <sys/uio.h> 50 #include <sys/proc.h> 51 #include <sys/kernel.h> 52 #include <sys/bus.h> 53 #include <sys/sbuf.h> 54 #include <sys/module.h> 55 #include <sys/sysctl.h> 56 57 #include <contrib/dev/acpica/include/acpi.h> 58 #include <contrib/dev/acpica/include/accommon.h> 59 #include <dev/acpica/acpivar.h> 60 #include "acpi_wmi_if.h" 61 62 #define _COMPONENT ACPI_OEM 63 ACPI_MODULE_NAME("HP") 64 65 #define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C" 66 #define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4" 67 #define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133" 68 69 #define ACPI_HP_WMI_DISPLAY_COMMAND 0x1 70 #define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2 71 #define ACPI_HP_WMI_ALS_COMMAND 0x3 72 #define ACPI_HP_WMI_DOCK_COMMAND 0x4 73 #define ACPI_HP_WMI_WIRELESS_COMMAND 0x5 74 75 #define ACPI_HP_METHOD_WLAN_ENABLED 1 76 #define ACPI_HP_METHOD_WLAN_RADIO 2 77 #define ACPI_HP_METHOD_WLAN_ON_AIR 3 78 #define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4 79 #define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5 80 #define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6 81 #define ACPI_HP_METHOD_BLUETOOTH_RADIO 7 82 #define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8 83 #define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9 84 #define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10 85 #define ACPI_HP_METHOD_WWAN_ENABLED 11 86 #define ACPI_HP_METHOD_WWAN_RADIO 12 87 #define ACPI_HP_METHOD_WWAN_ON_AIR 13 88 #define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14 89 #define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15 90 #define ACPI_HP_METHOD_ALS 16 91 #define ACPI_HP_METHOD_DISPLAY 17 92 #define ACPI_HP_METHOD_HDDTEMP 18 93 #define ACPI_HP_METHOD_DOCK 19 94 #define ACPI_HP_METHOD_CMI_DETAIL 20 95 #define ACPI_HP_METHOD_VERBOSE 21 96 97 #define HP_MASK_WWAN_ON_AIR 0x1000000 98 #define HP_MASK_BLUETOOTH_ON_AIR 0x10000 99 #define HP_MASK_WLAN_ON_AIR 0x100 100 #define HP_MASK_WWAN_RADIO 0x8000000 101 #define HP_MASK_BLUETOOTH_RADIO 0x80000 102 #define HP_MASK_WLAN_RADIO 0x800 103 #define HP_MASK_WWAN_ENABLED 0x2000000 104 #define HP_MASK_BLUETOOTH_ENABLED 0x20000 105 #define HP_MASK_WLAN_ENABLED 0x200 106 107 #define ACPI_HP_CMI_DETAIL_PATHS 0x01 108 #define ACPI_HP_CMI_DETAIL_ENUMS 0x02 109 #define ACPI_HP_CMI_DETAIL_FLAGS 0x04 110 #define ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE 0x08 111 112 struct acpi_hp_inst_seq_pair { 113 UINT32 sequence; /* sequence number as suggested by cmi bios */ 114 UINT8 instance; /* object instance on guid */ 115 }; 116 117 struct acpi_hp_softc { 118 device_t dev; 119 device_t wmi_dev; 120 int has_notify; /* notification GUID found */ 121 int has_cmi; /* CMI GUID found */ 122 int cmi_detail; /* CMI detail level 123 (set by sysctl) */ 124 int verbose; /* add debug output */ 125 int wlan_enable_if_radio_on; /* set by sysctl */ 126 int wlan_disable_if_radio_off; /* set by sysctl */ 127 int bluetooth_enable_if_radio_on; /* set by sysctl */ 128 int bluetooth_disable_if_radio_off; /* set by sysctl */ 129 int wwan_enable_if_radio_on; /* set by sysctl */ 130 int wwan_disable_if_radio_off; /* set by sysctl */ 131 int was_wlan_on_air; /* last known WLAN 132 on air status */ 133 int was_bluetooth_on_air; /* last known BT 134 on air status */ 135 int was_wwan_on_air; /* last known WWAN 136 on air status */ 137 struct sysctl_ctx_list *sysctl_ctx; 138 struct sysctl_oid *sysctl_tree; 139 struct cdev *hpcmi_dev_t; /* hpcmi device handle */ 140 struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */ 141 pid_t hpcmi_open_pid; /* pid operating on 142 /dev/hpcmi */ 143 int hpcmi_bufptr; /* current pointer position 144 in /dev/hpcmi output buffer 145 */ 146 int cmi_order_size; /* size of cmi_order list */ 147 struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI 148 instances ordered by BIOS suggested sequence */ 149 }; 150 151 static struct { 152 char *name; 153 int method; 154 char *description; 155 int access; 156 } acpi_hp_sysctls[] = { 157 { 158 .name = "wlan_enabled", 159 .method = ACPI_HP_METHOD_WLAN_ENABLED, 160 .description = "Enable/Disable WLAN (WiFi)", 161 .access = CTLTYPE_INT | CTLFLAG_RW 162 }, 163 { 164 .name = "wlan_radio", 165 .method = ACPI_HP_METHOD_WLAN_RADIO, 166 .description = "WLAN radio status", 167 .access = CTLTYPE_INT | CTLFLAG_RD 168 }, 169 { 170 .name = "wlan_on_air", 171 .method = ACPI_HP_METHOD_WLAN_ON_AIR, 172 .description = "WLAN radio ready to use (enabled and radio)", 173 .access = CTLTYPE_INT | CTLFLAG_RD 174 }, 175 { 176 .name = "wlan_enable_if_radio_on", 177 .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON, 178 .description = "Enable WLAN if radio is turned on", 179 .access = CTLTYPE_INT | CTLFLAG_RW 180 }, 181 { 182 .name = "wlan_disable_if_radio_off", 183 .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF, 184 .description = "Disable WLAN if radio is turned off", 185 .access = CTLTYPE_INT | CTLFLAG_RW 186 }, 187 { 188 .name = "bt_enabled", 189 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED, 190 .description = "Enable/Disable Bluetooth", 191 .access = CTLTYPE_INT | CTLFLAG_RW 192 }, 193 { 194 .name = "bt_radio", 195 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO, 196 .description = "Bluetooth radio status", 197 .access = CTLTYPE_INT | CTLFLAG_RD 198 }, 199 { 200 .name = "bt_on_air", 201 .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR, 202 .description = "Bluetooth radio ready to use" 203 " (enabled and radio)", 204 .access = CTLTYPE_INT | CTLFLAG_RD 205 }, 206 { 207 .name = "bt_enable_if_radio_on", 208 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON, 209 .description = "Enable bluetooth if radio is turned on", 210 .access = CTLTYPE_INT | CTLFLAG_RW 211 }, 212 { 213 .name = "bt_disable_if_radio_off", 214 .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF, 215 .description = "Disable bluetooth if radio is turned off", 216 .access = CTLTYPE_INT | CTLFLAG_RW 217 }, 218 { 219 .name = "wwan_enabled", 220 .method = ACPI_HP_METHOD_WWAN_ENABLED, 221 .description = "Enable/Disable WWAN (UMTS)", 222 .access = CTLTYPE_INT | CTLFLAG_RW 223 }, 224 { 225 .name = "wwan_radio", 226 .method = ACPI_HP_METHOD_WWAN_RADIO, 227 .description = "WWAN radio status", 228 .access = CTLTYPE_INT | CTLFLAG_RD 229 }, 230 { 231 .name = "wwan_on_air", 232 .method = ACPI_HP_METHOD_WWAN_ON_AIR, 233 .description = "WWAN radio ready to use (enabled and radio)", 234 .access = CTLTYPE_INT | CTLFLAG_RD 235 }, 236 { 237 .name = "wwan_enable_if_radio_on", 238 .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON, 239 .description = "Enable WWAN if radio is turned on", 240 .access = CTLTYPE_INT | CTLFLAG_RW 241 }, 242 { 243 .name = "wwan_disable_if_radio_off", 244 .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF, 245 .description = "Disable WWAN if radio is turned off", 246 .access = CTLTYPE_INT | CTLFLAG_RW 247 }, 248 { 249 .name = "als_enabled", 250 .method = ACPI_HP_METHOD_ALS, 251 .description = "Enable/Disable ALS (Ambient light sensor)", 252 .access = CTLTYPE_INT | CTLFLAG_RW 253 }, 254 { 255 .name = "display", 256 .method = ACPI_HP_METHOD_DISPLAY, 257 .description = "Display status", 258 .access = CTLTYPE_INT | CTLFLAG_RD 259 }, 260 { 261 .name = "hdd_temperature", 262 .method = ACPI_HP_METHOD_HDDTEMP, 263 .description = "HDD temperature", 264 .access = CTLTYPE_INT | CTLFLAG_RD 265 }, 266 { 267 .name = "is_docked", 268 .method = ACPI_HP_METHOD_DOCK, 269 .description = "Docking station status", 270 .access = CTLTYPE_INT | CTLFLAG_RD 271 }, 272 { 273 .name = "cmi_detail", 274 .method = ACPI_HP_METHOD_CMI_DETAIL, 275 .description = "Details shown in CMI output " 276 "(cat /dev/hpcmi)", 277 .access = CTLTYPE_INT | CTLFLAG_RW 278 }, 279 { 280 .name = "verbose", 281 .method = ACPI_HP_METHOD_VERBOSE, 282 .description = "Verbosity level", 283 .access = CTLTYPE_INT | CTLFLAG_RW 284 }, 285 286 { NULL, 0, NULL, 0 } 287 }; 288 289 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping"); 290 291 static void acpi_hp_identify(driver_t *driver, device_t parent); 292 static int acpi_hp_probe(device_t dev); 293 static int acpi_hp_attach(device_t dev); 294 static int acpi_hp_detach(device_t dev); 295 296 static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc); 297 static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS); 298 static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, 299 int arg, int oldarg); 300 static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method); 301 static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command, 302 int is_write, int val); 303 static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context); 304 static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, 305 UINT8 instance, char* outbuf, size_t outsize, 306 UINT32* sequence, int detail); 307 static void acpi_hp_hex_decode(char* buffer); 308 309 static d_open_t acpi_hp_hpcmi_open; 310 static d_close_t acpi_hp_hpcmi_close; 311 static d_read_t acpi_hp_hpcmi_read; 312 313 /* handler /dev/hpcmi device */ 314 static struct cdevsw hpcmi_cdevsw = { 315 .d_version = D_VERSION, 316 .d_open = acpi_hp_hpcmi_open, 317 .d_close = acpi_hp_hpcmi_close, 318 .d_read = acpi_hp_hpcmi_read, 319 .d_name = "hpcmi", 320 }; 321 322 static device_method_t acpi_hp_methods[] = { 323 DEVMETHOD(device_identify, acpi_hp_identify), 324 DEVMETHOD(device_probe, acpi_hp_probe), 325 DEVMETHOD(device_attach, acpi_hp_attach), 326 DEVMETHOD(device_detach, acpi_hp_detach), 327 328 DEVMETHOD_END 329 }; 330 331 static driver_t acpi_hp_driver = { 332 "acpi_hp", 333 acpi_hp_methods, 334 sizeof(struct acpi_hp_softc), 335 }; 336 337 static devclass_t acpi_hp_devclass; 338 339 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass, 340 0, 0); 341 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 342 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 343 344 static void 345 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc) 346 { 347 int wireless; 348 int new_wlan_status; 349 int new_bluetooth_status; 350 int new_wwan_status; 351 352 wireless = acpi_hp_exec_wmi_command(sc->wmi_dev, 353 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 354 new_wlan_status = -1; 355 new_bluetooth_status = -1; 356 new_wwan_status = -1; 357 358 if (sc->verbose) 359 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless); 360 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO) 361 && (wireless & HP_MASK_WLAN_ENABLED)) { 362 acpi_hp_exec_wmi_command(sc->wmi_dev, 363 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100); 364 new_wlan_status = 0; 365 } 366 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO) 367 && !(wireless & HP_MASK_WLAN_ENABLED)) { 368 acpi_hp_exec_wmi_command(sc->wmi_dev, 369 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101); 370 new_wlan_status = 1; 371 } 372 if (sc->bluetooth_disable_if_radio_off && 373 !(wireless & HP_MASK_BLUETOOTH_RADIO) && 374 (wireless & HP_MASK_BLUETOOTH_ENABLED)) { 375 acpi_hp_exec_wmi_command(sc->wmi_dev, 376 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200); 377 new_bluetooth_status = 0; 378 } 379 else if (sc->bluetooth_enable_if_radio_on && 380 (wireless & HP_MASK_BLUETOOTH_RADIO) && 381 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) { 382 acpi_hp_exec_wmi_command(sc->wmi_dev, 383 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202); 384 new_bluetooth_status = 1; 385 } 386 if (sc->wwan_disable_if_radio_off && 387 !(wireless & HP_MASK_WWAN_RADIO) && 388 (wireless & HP_MASK_WWAN_ENABLED)) { 389 acpi_hp_exec_wmi_command(sc->wmi_dev, 390 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400); 391 new_wwan_status = 0; 392 } 393 else if (sc->wwan_enable_if_radio_on && 394 (wireless & HP_MASK_WWAN_RADIO) && 395 !(wireless & HP_MASK_WWAN_ENABLED)) { 396 acpi_hp_exec_wmi_command(sc->wmi_dev, 397 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404); 398 new_wwan_status = 1; 399 } 400 401 if (new_wlan_status == -1) { 402 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR); 403 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) { 404 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1; 405 if (sc->verbose) 406 device_printf(sc->wmi_dev, 407 "WLAN on air changed to %i " 408 "(new_wlan_status is %i)\n", 409 sc->was_wlan_on_air, new_wlan_status); 410 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 411 0xc0+sc->was_wlan_on_air); 412 } 413 } 414 if (new_bluetooth_status == -1) { 415 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR); 416 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) { 417 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air? 418 0:1; 419 if (sc->verbose) 420 device_printf(sc->wmi_dev, 421 "BLUETOOTH on air changed" 422 " to %i (new_bluetooth_status is %i)\n", 423 sc->was_bluetooth_on_air, 424 new_bluetooth_status); 425 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 426 0xd0+sc->was_bluetooth_on_air); 427 } 428 } 429 if (new_wwan_status == -1) { 430 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR); 431 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) { 432 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1; 433 if (sc->verbose) 434 device_printf(sc->wmi_dev, 435 "WWAN on air changed to %i" 436 " (new_wwan_status is %i)\n", 437 sc->was_wwan_on_air, new_wwan_status); 438 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 439 0xe0+sc->was_wwan_on_air); 440 } 441 } 442 } 443 444 static void 445 acpi_hp_identify(driver_t *driver, device_t parent) 446 { 447 448 /* Don't do anything if driver is disabled. */ 449 if (acpi_disabled("hp")) 450 return; 451 452 /* Add only a single device instance. */ 453 if (device_find_child(parent, "acpi_hp", -1) != NULL) 454 return; 455 456 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL) 457 device_printf(parent, "add acpi_hp child failed\n"); 458 } 459 460 static int 461 acpi_hp_probe(device_t dev) 462 { 463 464 device_set_desc(dev, "HP ACPI-WMI Mapping"); 465 return (0); 466 } 467 468 static int 469 acpi_hp_attach(device_t dev) 470 { 471 struct acpi_hp_softc *sc; 472 int arg; 473 474 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 475 476 sc = device_get_softc(dev); 477 sc->dev = dev; 478 sc->has_notify = 0; 479 sc->has_cmi = 0; 480 sc->bluetooth_enable_if_radio_on = 0; 481 sc->bluetooth_disable_if_radio_off = 0; 482 sc->wlan_enable_if_radio_on = 0; 483 sc->wlan_disable_if_radio_off = 0; 484 sc->wlan_enable_if_radio_on = 0; 485 sc->wlan_disable_if_radio_off = 0; 486 sc->was_wlan_on_air = 0; 487 sc->was_bluetooth_on_air = 0; 488 sc->was_wwan_on_air = 0; 489 sc->cmi_detail = 0; 490 sc->cmi_order_size = -1; 491 sc->verbose = 0; 492 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 493 494 sc->wmi_dev = device_get_parent(dev); 495 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 496 ACPI_HP_WMI_BIOS_GUID)) { 497 device_printf(dev, 498 "WMI device does not provide the HP BIOS GUID\n"); 499 return (EINVAL); 500 } 501 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 502 ACPI_HP_WMI_EVENT_GUID)) { 503 device_printf(dev, 504 "HP event GUID detected, installing event handler\n"); 505 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 506 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 507 device_printf(dev, 508 "Could not install notification handler!\n"); 509 } 510 else { 511 sc->has_notify = 1; 512 } 513 } 514 if ((sc->has_cmi = 515 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 516 )) { 517 device_printf(dev, "HP CMI GUID detected\n"); 518 } 519 520 if (sc->has_cmi) { 521 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT, 522 GID_WHEEL, 0644, "hpcmi"); 523 sc->hpcmi_dev_t->si_drv1 = sc; 524 sc->hpcmi_open_pid = 0; 525 sc->hpcmi_bufptr = -1; 526 } 527 528 ACPI_SERIAL_BEGIN(hp); 529 530 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 531 sc->sysctl_tree = device_get_sysctl_tree(dev); 532 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 533 arg = 0; 534 if ((!sc->has_notify && 535 (acpi_hp_sysctls[i].method == 536 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 537 acpi_hp_sysctls[i].method == 538 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 539 acpi_hp_sysctls[i].method == 540 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 541 acpi_hp_sysctls[i].method == 542 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 543 acpi_hp_sysctls[i].method == 544 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 545 acpi_hp_sysctls[i].method == 546 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 547 (arg = acpi_hp_sysctl_get(sc, 548 acpi_hp_sysctls[i].method)) < 0) { 549 continue; 550 } 551 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 552 sc->was_wlan_on_air = arg; 553 } 554 else if (acpi_hp_sysctls[i].method == 555 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 556 sc->was_bluetooth_on_air = arg; 557 } 558 else if (acpi_hp_sysctls[i].method == 559 ACPI_HP_METHOD_WWAN_ON_AIR) { 560 sc->was_wwan_on_air = arg; 561 } 562 563 SYSCTL_ADD_PROC(sc->sysctl_ctx, 564 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 565 acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access, 566 sc, i, acpi_hp_sysctl, "I", 567 acpi_hp_sysctls[i].description); 568 } 569 ACPI_SERIAL_END(hp); 570 571 return (0); 572 } 573 574 static int 575 acpi_hp_detach(device_t dev) 576 { 577 int ret; 578 579 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 580 struct acpi_hp_softc *sc = device_get_softc(dev); 581 if (sc->has_cmi && sc->hpcmi_open_pid != 0) { 582 ret = EBUSY; 583 } 584 else { 585 if (sc->has_notify) { 586 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, 587 ACPI_HP_WMI_EVENT_GUID); 588 } 589 if (sc->hpcmi_bufptr != -1) { 590 sbuf_delete(&sc->hpcmi_sbuf); 591 sc->hpcmi_bufptr = -1; 592 } 593 sc->hpcmi_open_pid = 0; 594 destroy_dev(sc->hpcmi_dev_t); 595 ret = 0; 596 } 597 598 return (ret); 599 } 600 601 static int 602 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 603 { 604 struct acpi_hp_softc *sc; 605 int arg; 606 int oldarg; 607 int error = 0; 608 int function; 609 int method; 610 611 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 612 613 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 614 function = oidp->oid_arg2; 615 method = acpi_hp_sysctls[function].method; 616 617 ACPI_SERIAL_BEGIN(hp); 618 arg = acpi_hp_sysctl_get(sc, method); 619 oldarg = arg; 620 error = sysctl_handle_int(oidp, &arg, 0, req); 621 if (!error && req->newptr != NULL) { 622 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 623 } 624 ACPI_SERIAL_END(hp); 625 626 return (error); 627 } 628 629 static int 630 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 631 { 632 int val = 0; 633 634 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 635 ACPI_SERIAL_ASSERT(hp); 636 637 switch (method) { 638 case ACPI_HP_METHOD_WLAN_ENABLED: 639 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 640 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 641 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 642 break; 643 case ACPI_HP_METHOD_WLAN_RADIO: 644 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 645 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 646 val = ((val & HP_MASK_WLAN_RADIO) != 0); 647 break; 648 case ACPI_HP_METHOD_WLAN_ON_AIR: 649 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 650 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 651 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 652 break; 653 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 654 val = sc->wlan_enable_if_radio_on; 655 break; 656 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 657 val = sc->wlan_disable_if_radio_off; 658 break; 659 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 660 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 661 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 662 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 663 break; 664 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 665 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 666 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 667 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 668 break; 669 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 670 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 671 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 672 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 673 break; 674 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 675 val = sc->bluetooth_enable_if_radio_on; 676 break; 677 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 678 val = sc->bluetooth_disable_if_radio_off; 679 break; 680 case ACPI_HP_METHOD_WWAN_ENABLED: 681 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 682 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 683 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 684 break; 685 case ACPI_HP_METHOD_WWAN_RADIO: 686 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 687 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 688 val = ((val & HP_MASK_WWAN_RADIO) != 0); 689 break; 690 case ACPI_HP_METHOD_WWAN_ON_AIR: 691 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 692 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 693 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 694 break; 695 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 696 val = sc->wwan_enable_if_radio_on; 697 break; 698 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 699 val = sc->wwan_disable_if_radio_off; 700 break; 701 case ACPI_HP_METHOD_ALS: 702 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 703 ACPI_HP_WMI_ALS_COMMAND, 0, 0); 704 break; 705 case ACPI_HP_METHOD_DISPLAY: 706 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 707 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0); 708 break; 709 case ACPI_HP_METHOD_HDDTEMP: 710 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 711 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0); 712 break; 713 case ACPI_HP_METHOD_DOCK: 714 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 715 ACPI_HP_WMI_DOCK_COMMAND, 0, 0); 716 break; 717 case ACPI_HP_METHOD_CMI_DETAIL: 718 val = sc->cmi_detail; 719 break; 720 case ACPI_HP_METHOD_VERBOSE: 721 val = sc->verbose; 722 break; 723 } 724 725 return (val); 726 } 727 728 static int 729 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 730 { 731 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 732 ACPI_SERIAL_ASSERT(hp); 733 734 if (method != ACPI_HP_METHOD_CMI_DETAIL && 735 method != ACPI_HP_METHOD_VERBOSE) 736 arg = arg?1:0; 737 738 if (arg != oldarg) { 739 switch (method) { 740 case ACPI_HP_METHOD_WLAN_ENABLED: 741 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 742 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 743 arg?0x101:0x100)); 744 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 745 sc->wlan_enable_if_radio_on = arg; 746 acpi_hp_evaluate_auto_on_off(sc); 747 break; 748 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 749 sc->wlan_disable_if_radio_off = arg; 750 acpi_hp_evaluate_auto_on_off(sc); 751 break; 752 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 753 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 754 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 755 arg?0x202:0x200)); 756 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 757 sc->bluetooth_enable_if_radio_on = arg; 758 acpi_hp_evaluate_auto_on_off(sc); 759 break; 760 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 761 sc->bluetooth_disable_if_radio_off = arg?1:0; 762 acpi_hp_evaluate_auto_on_off(sc); 763 break; 764 case ACPI_HP_METHOD_WWAN_ENABLED: 765 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 766 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 767 arg?0x404:0x400)); 768 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 769 sc->wwan_enable_if_radio_on = arg?1:0; 770 acpi_hp_evaluate_auto_on_off(sc); 771 break; 772 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 773 sc->wwan_disable_if_radio_off = arg?1:0; 774 acpi_hp_evaluate_auto_on_off(sc); 775 break; 776 case ACPI_HP_METHOD_ALS: 777 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 778 ACPI_HP_WMI_ALS_COMMAND, 1, 779 arg?1:0)); 780 case ACPI_HP_METHOD_CMI_DETAIL: 781 sc->cmi_detail = arg; 782 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 783 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 784 sc->cmi_order_size = -1; 785 } 786 break; 787 case ACPI_HP_METHOD_VERBOSE: 788 sc->verbose = arg; 789 break; 790 } 791 } 792 793 return (0); 794 } 795 796 static __inline void 797 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 798 if (buf && buf->Pointer) { 799 AcpiOsFree(buf->Pointer); 800 } 801 } 802 803 static void 804 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 805 { 806 device_t dev = context; 807 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 808 809 struct acpi_hp_softc *sc = device_get_softc(dev); 810 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 811 ACPI_OBJECT *obj; 812 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 813 obj = (ACPI_OBJECT*) response.Pointer; 814 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 815 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) { 816 acpi_hp_evaluate_auto_on_off(sc); 817 } 818 } 819 acpi_hp_free_buffer(&response); 820 } 821 822 static int 823 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val) 824 { 825 UINT32 params[5] = { 0x55434553, 826 is_write?2:1, 827 command, 828 is_write?4:0, 829 val}; 830 UINT32* result; 831 ACPI_OBJECT *obj; 832 ACPI_BUFFER in = { sizeof(params), ¶ms }; 833 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 834 int retval; 835 836 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 837 0, 0x3, &in, &out))) { 838 acpi_hp_free_buffer(&out); 839 return (-EINVAL); 840 } 841 obj = out.Pointer; 842 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 843 acpi_hp_free_buffer(&out); 844 return (-EINVAL); 845 } 846 result = (UINT32*) obj->Buffer.Pointer; 847 retval = result[2]; 848 if (result[1] > 0) { 849 retval = result[1]; 850 } 851 acpi_hp_free_buffer(&out); 852 853 return (retval); 854 } 855 856 static __inline char* 857 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 858 int length; 859 860 dst[0] = 0; 861 if (obj->Type == ACPI_TYPE_STRING) { 862 length = obj->String.Length+1; 863 if (length > size) { 864 length = size - 1; 865 } 866 strlcpy(dst, obj->String.Pointer, length); 867 acpi_hp_hex_decode(dst); 868 } 869 870 return (dst); 871 } 872 873 874 /* 875 * Read BIOS Setting block in instance "instance". 876 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 877 * elements: 878 * Index Meaning 879 * 0 Setting Name [string] 880 * 1 Value (comma separated, asterisk marks the current value) [string] 881 * 2 Path within the bios hierarchy [string] 882 * 3 IsReadOnly [int] 883 * 4 DisplayInUI [int] 884 * 5 RequiresPhysicalPresence [int] 885 * 6 Sequence for ordering within the bios settings (absolute) [int] 886 * 7 Length of prerequisites array [int] 887 * 8..8+[7] PrerequisiteN [string] 888 * 9+[7] Current value (in case of enum) [string] / Array length [int] 889 * 10+[7] Enum length [int] / Array values 890 * 11+[7]ff Enum value at index x [string] 891 */ 892 static int 893 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 894 char* outbuf, size_t outsize, UINT32* sequence, int detail) 895 { 896 ACPI_OBJECT *obj; 897 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 898 int i; 899 int outlen; 900 int size = 255; 901 int has_enums = 0; 902 int valuebase = 0; 903 char string_buffer[size]; 904 int enumbase; 905 906 outlen = 0; 907 outbuf[0] = 0; 908 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 909 acpi_hp_free_buffer(&out); 910 return (-EINVAL); 911 } 912 obj = out.Pointer; 913 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 914 acpi_hp_free_buffer(&out); 915 return (-EINVAL); 916 } 917 918 if (obj->Package.Count >= 8 && 919 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) { 920 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 921 } 922 923 /* check if this matches our expectations based on limited knowledge */ 924 if (valuebase > 7 && obj->Package.Count > valuebase + 1 && 925 obj->Package.Elements[0].Type == ACPI_TYPE_STRING && 926 obj->Package.Elements[1].Type == ACPI_TYPE_STRING && 927 obj->Package.Elements[2].Type == ACPI_TYPE_STRING && 928 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER && 929 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER && 930 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER && 931 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER && 932 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING && 933 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER && 934 obj->Package.Count > valuebase + 935 obj->Package.Elements[valuebase+1].Integer.Value 936 ) { 937 enumbase = valuebase + 1; 938 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 939 strlcat(outbuf, acpi_hp_get_string_from_object( 940 &obj->Package.Elements[2], string_buffer, size), 941 outsize); 942 outlen += 48; 943 while (strlen(outbuf) < outlen) 944 strlcat(outbuf, " ", outsize); 945 } 946 strlcat(outbuf, acpi_hp_get_string_from_object( 947 &obj->Package.Elements[0], string_buffer, size), 948 outsize); 949 outlen += 43; 950 while (strlen(outbuf) < outlen) 951 strlcat(outbuf, " ", outsize); 952 strlcat(outbuf, acpi_hp_get_string_from_object( 953 &obj->Package.Elements[valuebase], string_buffer, 954 size), 955 outsize); 956 outlen += 21; 957 while (strlen(outbuf) < outlen) 958 strlcat(outbuf, " ", outsize); 959 for (i = 0; i < strlen(outbuf); ++i) 960 if (outbuf[i] == '\\') 961 outbuf[i] = '/'; 962 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 963 for (i = enumbase + 1; i < enumbase + 1 + 964 obj->Package.Elements[enumbase].Integer.Value; 965 ++i) { 966 acpi_hp_get_string_from_object( 967 &obj->Package.Elements[i], string_buffer, 968 size); 969 if (strlen(string_buffer) > 1 || 970 (strlen(string_buffer) == 1 && 971 string_buffer[0] != ' ')) { 972 if (has_enums) 973 strlcat(outbuf, "/", outsize); 974 else 975 strlcat(outbuf, " (", outsize); 976 strlcat(outbuf, string_buffer, outsize); 977 has_enums = 1; 978 } 979 } 980 } 981 if (has_enums) 982 strlcat(outbuf, ")", outsize); 983 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 984 strlcat(outbuf, obj->Package.Elements[3].Integer.Value? 985 " [ReadOnly]":"", outsize); 986 strlcat(outbuf, obj->Package.Elements[4].Integer.Value? 987 "":" [NOUI]", outsize); 988 strlcat(outbuf, obj->Package.Elements[5].Integer.Value? 989 " [RPP]":"", outsize); 990 } 991 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 992 } 993 acpi_hp_free_buffer(&out); 994 995 return (0); 996 } 997 998 999 1000 /* 1001 * Convert given two digit hex string (hexin) to an UINT8 referenced 1002 * by byteout. 1003 * Return != 0 if the was a problem (invalid input) 1004 */ 1005 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1006 { 1007 unsigned int hi; 1008 unsigned int lo; 1009 1010 hi = hexin[0]; 1011 lo = hexin[1]; 1012 if ('0' <= hi && hi <= '9') 1013 hi -= '0'; 1014 else if ('A' <= hi && hi <= 'F') 1015 hi -= ('A' - 10); 1016 else if ('a' <= hi && hi <= 'f') 1017 hi -= ('a' - 10); 1018 else 1019 return (1); 1020 if ('0' <= lo && lo <= '9') 1021 lo -= '0'; 1022 else if ('A' <= lo && lo <= 'F') 1023 lo -= ('A' - 10); 1024 else if ('a' <= lo && lo <= 'f') 1025 lo -= ('a' - 10); 1026 else 1027 return (1); 1028 *byteout = (hi << 4) + lo; 1029 1030 return (0); 1031 } 1032 1033 1034 static void 1035 acpi_hp_hex_decode(char* buffer) 1036 { 1037 int i; 1038 int length = strlen(buffer); 1039 UINT8 *uin; 1040 UINT8 uout; 1041 1042 if (((int)length/2)*2 == length || length < 10) return; 1043 1044 for (i = 0; i<length; ++i) { 1045 if (!((i+1)%3)) { 1046 if (buffer[i] != ' ') 1047 return; 1048 } 1049 else 1050 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1051 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1052 return; 1053 } 1054 1055 for (i = 0; i<length; i += 3) { 1056 uin = &buffer[i]; 1057 uout = 0; 1058 acpi_hp_hex_to_int(uin, &uout); 1059 buffer[i/3] = (char) uout; 1060 } 1061 buffer[(length+1)/3] = 0; 1062 } 1063 1064 1065 /* 1066 * open hpcmi device 1067 */ 1068 static int 1069 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1070 { 1071 struct acpi_hp_softc *sc; 1072 int ret; 1073 1074 if (dev == NULL || dev->si_drv1 == NULL) 1075 return (EBADF); 1076 sc = dev->si_drv1; 1077 1078 ACPI_SERIAL_BEGIN(hp); 1079 if (sc->hpcmi_open_pid != 0) { 1080 ret = EBUSY; 1081 } 1082 else { 1083 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1084 == NULL) { 1085 ret = ENXIO; 1086 } else { 1087 sc->hpcmi_open_pid = td->td_proc->p_pid; 1088 sc->hpcmi_bufptr = 0; 1089 ret = 0; 1090 } 1091 } 1092 ACPI_SERIAL_END(hp); 1093 1094 return (ret); 1095 } 1096 1097 /* 1098 * close hpcmi device 1099 */ 1100 static int 1101 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1102 { 1103 struct acpi_hp_softc *sc; 1104 int ret; 1105 1106 if (dev == NULL || dev->si_drv1 == NULL) 1107 return (EBADF); 1108 sc = dev->si_drv1; 1109 1110 ACPI_SERIAL_BEGIN(hp); 1111 if (sc->hpcmi_open_pid == 0) { 1112 ret = EBADF; 1113 } 1114 else { 1115 if (sc->hpcmi_bufptr != -1) { 1116 sbuf_delete(&sc->hpcmi_sbuf); 1117 sc->hpcmi_bufptr = -1; 1118 } 1119 sc->hpcmi_open_pid = 0; 1120 ret = 0; 1121 } 1122 ACPI_SERIAL_END(hp); 1123 1124 return (ret); 1125 } 1126 1127 /* 1128 * Read from hpcmi bios information 1129 */ 1130 static int 1131 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1132 { 1133 struct acpi_hp_softc *sc; 1134 int pos, i, l, ret; 1135 UINT8 instance; 1136 UINT8 maxInstance; 1137 UINT32 sequence; 1138 int linesize = 1025; 1139 char line[linesize]; 1140 1141 if (dev == NULL || dev->si_drv1 == NULL) 1142 return (EBADF); 1143 sc = dev->si_drv1; 1144 1145 ACPI_SERIAL_BEGIN(hp); 1146 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1147 || sc->hpcmi_bufptr == -1) { 1148 ret = EBADF; 1149 } 1150 else { 1151 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1152 if (sc->cmi_order_size < 0) { 1153 maxInstance = sc->has_cmi; 1154 if (!(sc->cmi_detail & 1155 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1156 maxInstance > 0) { 1157 maxInstance--; 1158 } 1159 sc->cmi_order_size = 0; 1160 for (instance = 0; instance < maxInstance; 1161 ++instance) { 1162 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1163 ACPI_HP_WMI_CMI_GUID, instance, 1164 line, linesize, &sequence, 1165 sc->cmi_detail)) { 1166 instance = maxInstance; 1167 } 1168 else { 1169 pos = sc->cmi_order_size; 1170 for (i=0; 1171 i<sc->cmi_order_size && i<127; 1172 ++i) { 1173 if (sc->cmi_order[i].sequence > sequence) { 1174 pos = i; 1175 break; 1176 } 1177 } 1178 for (i=sc->cmi_order_size; 1179 i>pos; 1180 --i) { 1181 sc->cmi_order[i].sequence = 1182 sc->cmi_order[i-1].sequence; 1183 sc->cmi_order[i].instance = 1184 sc->cmi_order[i-1].instance; 1185 } 1186 sc->cmi_order[pos].sequence = 1187 sequence; 1188 sc->cmi_order[pos].instance = 1189 instance; 1190 sc->cmi_order_size++; 1191 } 1192 } 1193 } 1194 for (i=0; i<sc->cmi_order_size; ++i) { 1195 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1196 ACPI_HP_WMI_CMI_GUID, 1197 sc->cmi_order[i].instance, line, linesize, 1198 &sequence, sc->cmi_detail)) { 1199 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1200 } 1201 } 1202 sbuf_finish(&sc->hpcmi_sbuf); 1203 } 1204 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1205 sbuf_delete(&sc->hpcmi_sbuf); 1206 sc->hpcmi_bufptr = -1; 1207 sc->hpcmi_open_pid = 0; 1208 ret = ENOMEM; 1209 } else { 1210 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1211 sc->hpcmi_bufptr); 1212 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1213 sc->hpcmi_bufptr, l, buf) : 0; 1214 sc->hpcmi_bufptr += l; 1215 } 1216 } 1217 ACPI_SERIAL_END(hp); 1218 1219 return (ret); 1220 } 1221